rostel



(No Model.) 4 Sheets-Sheet 1.

C. STEL. BREEG ADING GUN.

No. 422,838. Patented Mar. 4, 1 890.

(No Model.)

4 SheetsSheet 2.

G. B, EL. BREEGH L0 NG GUN.

No. 422,838. V Patented Mar. 4, 1890 (wed X (No Model.)

4 Sheets-Sheet 3.

O. HOSTEL. BRBEGH LOADING GUN.

Patented Mar. 4, 1890.

@5 K 4% mww .4

4 Sheets-Sheet .4.

(No Model.)

0. RUSTEL. BREEGH LOADING G'UN.

Patented Mar. 4, 1890.

FIG.8-

Letters Patent in Belgium, No. 84:,276, dated,

U ITED STATES PATENT Gr mes,

CARL RUSTEL, OF MAGDEBURG, PRUSSIA, GERMANY, ASSIGNOR TO :rRUSONiVERK, OF SAME PLACE;

BREECH-LOADING GUN.

SPECIFICATION forming part of Letters Patent No. 422,838, dated march 4, 1890..

Applicationfiled May 23, 1889. Serial No. 311,872, (No model.) Patentedin Germany November 25,1888, Nix 5,123; in Belgium December 13, 1888', No. ,84=,276, and in France December 19, 1888, lio- 194,8$6-

To aZZ whon't it may concern:

Be it known that I, CARL RosTEL, a subj ect new and useful Improvements in Breech-' Loading Guns, (forwhich I have obtained December 13, 1888; in France, No. 194,886,

dated December 19,1888, and in Germany, No. G. 5,128, dated November-'25, 1888,)of which the following is a specification.

The invention hereinafter described relates to guns of the same general structure as that described in PatentNo. 383,372, of May 22, v 1888, and'is designed to facilitate the working of breech-loading guns, wherein the breechblock slides in a vertical or approximately vertical path by balancing or equalizing the,

forces re uired to'be exerted in raisin and lowering the breech-block.

Figures 1 and Q represent, respectively, a

side elevation and transverse section through the trunnions of one form .of my invention. Figs. 3, 4, 5, 6, 7,.and8 are views illustrating modifications.

2A is the re-enforce. which is, provided with the trunnionsof the gun, and Bis the breechblock, ,which is moved up and down by a 'crank'a. The-said crank, which in the gun shown is supported in oneof the trunnions arranged-on the re-enforce, is turned by means ofahand-lever (J and transmitsmovement'to the breech-block" through the medium of its pin, which slides in a groove formed in the said block. Now inorder to diminish the impact of the falling breech-block, and at the same time to store the force exerted in the descentthereof for th subsequent raising of the said block, the crankshaft-ct. in Fig. '2 is provided with a torsional spring; For this- .purpose. the said crankshaft is bored-out and .the spiral. spring 3 is inserted, and one end thereof introduced into a. holein the wall of a casing b, which is supported in theb'ore of the crank-shaft, so that it can be turned in the -latter. The heador disk' of the casing b is provided with a hook which bears at the commencement of the raising movement against 'crank' 06, whic a pin. or studc,'fi x'ed in the trout surface of the trunnion, and is prevented from turning in one direction by the said pin. The other end of the spiral spring-is firmly connected withthe crank and takes part in the turning movement of the same. By'the latter1nove-- ment the torsionalv spring is accordingly wound up or put tinder tension and the velocity of the falling breech-block is decreased; but inthe next operation of raising the breechblock the spiral spring assists in the upward movement thereof by means of'the hand-lever 0, and consequently-a balancing or equalizing of the forces which are used in the downward and upward movement of the breechblock is-obtained.

In'Fig-s. 3 and 4: is represented a modifies; tion of the device. The trun nions in this case are not arranged onthe reenforce, oonse quentiy'there' is not s'pace for a sufliciently long spiral springa-rranged as above specif ed. The problem is solved by the employment of a special crank d, the pin of which slides in an oblique-groove formed in the wall of the re-enforce. Thecrank d is pivoted in the breech-block, and is. provided with a square hole, inv which a torsional spring composed of plate-springs is inserted. The other end of this spring is securedin the boss of alever e,whieh is supported in acavity ofv the breeclr block, and is secured by means of a screwf in a-position correspondin g to the desired initial tension of the spring. A sleeve arranged on the boss of the lever e surrounds the-spr ng" and prevents undue bending of the latter. 1

In the lowering of thbreech-blocli thecran'k- (Z is turned by'the sliding ofiits pin 'inthe or equalizing of the force is obtained.

Figs. 5 and 6' illustrate'the'solutioncof the T oblique grooveand the torsional spring is an under tension. This" tensionfa'ssists inthe problem by means of a pressurespring. This spring is sup ortedupon the shaft of the is .jprov-ided at its free end with a quick-pitch screwthr'ead. The nutb forms a sleeve which .eanfl bedispl'aced in the, re-enforce of the gumbutaiannot be turned.

. ii'uo'us, as the natureof the invention-mar necilitates the raising of the breech-block B.

. In'thegun shown inFig's. 7 and 8 the problem is solved by means of a powerful spiral plate-spring or involute spring arranged in. a 4 recess in the re-enforce, the outer end being secured to the re-enforce and the inner end I to arsleeve b, placed upon the square part of .the shaft a. A disk 6, for closing the said re Icessand forguiding the sleeve 1) on. cranlr- ,7

' block sliding therein, .of the shaft having on shaft or, is connected therewith. The mode of operation of this device is exactly the same "as repeatedly above described. I

j The number of the modifications might of course be increased, but this would be super-'- ly, the "balancing of the breech-block by a crank- 'Wh-ichi's under spring-pressure-has been inade suficiei ltly' clear by the examples 55; Selected-'- i 1 Having thus described my invention, the

following is what I claim as new therein and desire to secure by Letters Patent:

1. The combination, with the breech-block and crank. engaging the same and adapted to be turned by'the Withdrawal of the block, of

I} a torsional spring connected to the crank and opposing its movement, substantially as explained.

2. In a breech-loading gun, the combination, with a shaft of the breech-lowering mechanism, of a spring connected with the shaft and opposing the movement thereof with a yielding force, substantially as and for the purpose set forth.

3. The combination, with the breech and the one end the crank engaging the breech and on the other the hand-lever for controlling the shaft, and the spring mounted on the shaft for opposing the rotation thereof, all substan:

tially as and for the purposes set forth.

CARL Ros'rnL.

Witnesses:

J ULIUS VON STINTZ, 'EMIL KALLNEOKER. 

